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是我的代碼C++插播廣告超載問題
ifstream& operator>>(ifstream &input,Line3D &line3d)
{
int x1,y1,z1,x2,y2,z2;
x1=0;
y1=0;
z1=0;
x2=0;
y2=0;
z2=0;
//get x1
input.ignore(2);
input>>x1;
//get y1
input.ignore();
input>>y1;
//get z1
input.ignore();
input>>z1;
//get x2
input.ignore(4);
input>>x2;
//get y2
input.ignore();
input>>y2;
//get z2
input.ignore();
input>>z2;
input.ignore(2);
//cout << x1 << "," << y1 << "," << z1 << "," <<endl;
//cout << x2 << "," << y2 << "," << z2 << "," <<endl;
Point3D pt1(x1,y1,z1);
Point3D pt2(x2,y2,z2);
line3d.setPt1(pt1);
line3d.setPt2(pt2);
line3d.setLength();
}
有這個奇怪的問題，如果我的評論我的清點，上述2 COUT。我的代碼將無法正常工作，但如果我取消它，代碼將工作..繼承人的終端輸出..
Please enter your choice: 1
Please enter filename: messy.txt
10 records read in successfully!
Going back to main menu ...
但是，如果我去掉COUT ...
請輸入您的選擇：1
Please enter filename: file.txt
7,12,3,
-9,13,68,
7,-12,3,
9,13,68,
70,-120,-3,
-29,1,268,
25,-69,-33,
-2,-41,58,
9 records read in successfully!
Going back to main menu ...
9記錄是正確的。但爲什麼cout會解決我的代碼問題。而我認爲cout只是打印到終端。我在這裏做錯了什麼。
這是文本文件內容
Point2D, [3, 2]
Line3D, [7, 12, 3], [-9, 13, 68]
Point3D, [1, 3, 8]
Line2D, [5, 7], [3, 8]
Point2D, [3, 2]
Line3D, [7, -12, 3], [9, 13, 68]
Point3D, [6, 9, 5]
Point2D, [2, 2]
Line3D, [70, -120, -3], [-29, 1, 268]
Line3D, [25, -69, -33], [-2, -41, 58]
Point3D, [6, 9, -50]
正確的迴應，我從終端要的是
Correct output: 9 records read in successfully
Reason: as 10 means the value fail to record to vector. and duplicate is not removed.
感謝所有指南，我應該怎麼做才能保持正確的輸出還刪除掉cout ..
我在main.cpp上的更多代碼：
readFile.open(filename.c_str());
//if successfully open
if(readFile.is_open())
{
//record counter set to 0
numberOfRecords = 0;
while(readFile.good())
{
//input stream get line by line
readFile.getline(buffer,25,',');
Line3D line3d_tmp;
readFile>>line3d_tmp;
done=true;
//some for loop to check for duplication
//done will be false if doesnt work
if(done==true)
{
line3d.push_back(line3d_tmp);
}
所以你看看，如果值是push_back到我的向量中，重複的記錄將被刪除，因爲我故意放2個相同的值的記錄。問題是如果我使用2 cout線。記錄顯示爲9（正確，因爲有1行重複），第二次運行輸入相同的文件。正在讀取0條記錄。
但是，如果我在第二次運行時將我的cout註釋掉，它會再次讀取4個記錄。第一次運行爲10條..
請縮小範圍。 –
爲什麼9是正確的？我在你的產量中只看到8行。 –